A collection of sterile devices designed to locate a peripheral nerve or nerve plexus with electrical neuromuscular stimulation, to target the percutaneous and continuous delivery of an anaesthetic for regional anaesthesia (RA). It typically includes a dedicated insulated needle or cannula with an uninsulated tip for nerve localization, an electrical cable for connection to a current generator, a catheter that may have a stimulatable stylet, a catheter inserter, and a syringe. The inserted catheter enables continuous nerve-block and localization perioperatively, and it is used to treat postoperative or chronic pain. This is a single-use device.